Visual check:
* Inspect the transmission for transmission fluid leaks, rust, or other damage.
* Check the condition of mounting bolts and fasteners.
* Make sure there is no abnormal noise when idling.
Checking the fluid level:
* Remove the automatic transmission fluid level dipstick and wipe it with a clean cloth.
* Insert the dipstick back and remove it again.
* Check the fluid level on the dipstick. It should be between the “cold” and “hot” marks.
*If the fluid level is low, add the appropriate Nissan automatic transmission fluid.
Functionality check:
* Start the engine and let it idle for a few minutes.
* Switch to “D” mode (forward driving) and carefully release the brake. The car should move off smoothly.
* Check gear shifting during acceleration. Shifts must be smooth and timely.
* Accelerate and decelerate several times. The automatic transmission should shift gears up and down smoothly and without slipping.
Checking the control computer:
*Connect the diagnostic scanner to the car.
*Check for automatic transmission related fault codes.
* If there are fault codes, diagnose them and correct the cause.
Additional tips:
* Check the automatic transmission fluid level regularly, especially before long trips.
*Follow the manufacturer’s recommendations for changing transmission fluid.
*If you notice any problems with your automatic transmission, contact a qualified mechanic immediately.
* Regular maintenance and timely troubleshooting will help extend the life of the automatic transmission.